./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:23:59,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:23:59,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:23:59,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:23:59,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:23:59,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:23:59,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:23:59,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:23:59,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:23:59,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:23:59,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:23:59,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:23:59,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:23:59,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:23:59,659 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:23:59,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:23:59,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:23:59,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:23:59,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:23:59,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:23:59,661 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:23:59,665 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:23:59,665 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:23:59,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:23:59,666 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:23:59,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:23:59,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:23:59,666 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:23:59,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:23:59,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:23:59,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:23:59,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:23:59,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:23:59,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:59,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:23:59,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:23:59,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:23:59,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:23:59,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:23:59,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:23:59,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:23:59,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:23:59,671 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-24 19:23:59,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:23:59,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:23:59,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:23:59,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:23:59,934 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:23:59,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-24 19:24:01,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:24:01,606 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:24:01,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-24 19:24:01,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fa33b22/97fdfd23d7a040b6855f5500f85f240f/FLAG28ca862a4 [2024-10-24 19:24:01,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fa33b22/97fdfd23d7a040b6855f5500f85f240f [2024-10-24 19:24:01,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:24:01,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:24:01,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:01,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:24:01,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:24:01,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:01" (1/1) ... [2024-10-24 19:24:01,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29279d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:01, skipping insertion in model container [2024-10-24 19:24:01,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:01" (1/1) ... [2024-10-24 19:24:01,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:01,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:01,875 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-24 19:24:01,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60e8bcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:01, skipping insertion in model container [2024-10-24 19:24:01,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:01,876 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:24:01,878 INFO L158 Benchmark]: Toolchain (without parser) took 240.29ms. Allocated memory is still 163.6MB. Free memory was 130.3MB in the beginning and 118.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:24:01,878 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:24:01,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.21ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 118.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:24:01,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.21ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 118.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 114]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:24:03,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:24:03,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:24:03,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:24:03,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:24:03,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:24:03,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:24:03,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:24:03,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:24:03,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:24:03,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:24:03,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:24:03,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:24:03,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:24:03,975 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:24:03,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:24:03,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:24:03,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:24:03,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:24:03,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:24:03,979 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:24:03,980 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:24:03,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:24:03,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:24:03,983 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:24:03,983 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:24:03,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:24:03,984 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:24:03,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:24:03,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:24:03,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:24:03,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:24:03,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:24:03,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:24:03,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:24:03,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:24:03,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:24:03,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:24:03,986 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:24:03,986 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:24:03,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:24:03,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:24:03,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:24:03,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:24:03,989 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:24:03,989 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-24 19:24:04,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:24:04,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:24:04,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:24:04,339 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:24:04,339 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:24:04,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-24 19:24:05,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:24:06,100 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:24:06,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-24 19:24:06,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/149fb7c04/a66d98e8274c4c0e92754b3eeb1998aa/FLAGcc4ccf01e [2024-10-24 19:24:06,129 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/149fb7c04/a66d98e8274c4c0e92754b3eeb1998aa [2024-10-24 19:24:06,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:24:06,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:24:06,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:06,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:24:06,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:24:06,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42313282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06, skipping insertion in model container [2024-10-24 19:24:06,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:06,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:06,428 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:24:06,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:06,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:06,468 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:24:06,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:06,524 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:24:06,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06 WrapperNode [2024-10-24 19:24:06,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:06,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:24:06,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:24:06,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:24:06,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,591 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 157 [2024-10-24 19:24:06,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:24:06,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:24:06,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:24:06,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:24:06,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,638 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:24:06,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:24:06,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:24:06,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:24:06,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:24:06,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (1/1) ... [2024-10-24 19:24:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:24:06,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:06,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:24:06,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:24:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:24:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:24:06,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:24:06,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:24:06,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:24:06,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:24:06,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:24:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:24:06,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:24:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:24:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:24:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:24:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:24:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:24:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:24:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:24:06,762 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:24:06,907 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:24:06,910 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:24:07,287 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:24:07,288 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:24:07,591 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:24:07,591 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:24:07,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:24:07 BoogieIcfgContainer [2024-10-24 19:24:07,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:24:07,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:24:07,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:24:07,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:24:07,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:24:06" (1/3) ... [2024-10-24 19:24:07,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6819e5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:24:07, skipping insertion in model container [2024-10-24 19:24:07,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:06" (2/3) ... [2024-10-24 19:24:07,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6819e5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:24:07, skipping insertion in model container [2024-10-24 19:24:07,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:24:07" (3/3) ... [2024-10-24 19:24:07,601 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-10-24 19:24:07,616 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:24:07,617 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 19:24:07,617 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:24:07,671 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:24:07,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:24:07,727 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-24 19:24:07,728 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:24:07,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-24 19:24:07,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:24:07,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-24 19:24:07,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:24:07,759 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@201a2093, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:24:07,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-24 19:24:07,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:24:07,765 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:24:07,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:24:07,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:07,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:24:07,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:07,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash 504850, now seen corresponding path program 1 times [2024-10-24 19:24:07,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653273013] [2024-10-24 19:24:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:07,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:07,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:07,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:07,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:24:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:07,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:24:07,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:07,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:24:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:07,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:07,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653273013] [2024-10-24 19:24:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653273013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:07,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:07,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:24:07,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361352754] [2024-10-24 19:24:07,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:07,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:24:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:24:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:24:08,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:08,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:08,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:08,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:08,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:08,249 INFO L124 PetriNetUnfolderBase]: 238/446 cut-off events. [2024-10-24 19:24:08,250 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-24 19:24:08,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 446 events. 238/446 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2044 event pairs, 201 based on Foata normal form. 22/334 useless extension candidates. Maximal degree in co-relation 814. Up to 388 conditions per place. [2024-10-24 19:24:08,257 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-24 19:24:08,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-10-24 19:24:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:24:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:24:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-24 19:24:08,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-24 19:24:08,270 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-10-24 19:24:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-10-24 19:24:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:08,276 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-24 19:24:08,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-24 19:24:08,283 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-24 19:24:08,284 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-24 19:24:08,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:08,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:08,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:24:08,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:24:08,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:08,485 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:08,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash 504851, now seen corresponding path program 1 times [2024-10-24 19:24:08,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854482263] [2024-10-24 19:24:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:08,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:08,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:08,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:08,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:24:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:08,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:24:08,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:08,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:08,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:08,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854482263] [2024-10-24 19:24:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854482263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109711734] [2024-10-24 19:24:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:08,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:24:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:24:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:24:08,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:08,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:08,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:08,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:08,914 INFO L124 PetriNetUnfolderBase]: 239/449 cut-off events. [2024-10-24 19:24:08,914 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:24:08,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 449 events. 239/449 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2058 event pairs, 201 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 838. Up to 393 conditions per place. [2024-10-24 19:24:08,921 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-24 19:24:08,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-10-24 19:24:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:24:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:24:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-24 19:24:08,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-24 19:24:08,925 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-10-24 19:24:08,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-10-24 19:24:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:08,928 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-24 19:24:08,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-24 19:24:08,929 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-24 19:24:08,929 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-24 19:24:08,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:08,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:08,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:24:08,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:09,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:09,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:09,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 485177513, now seen corresponding path program 1 times [2024-10-24 19:24:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271107618] [2024-10-24 19:24:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:09,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:09,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:24:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:09,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:24:09,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:09,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:09,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:09,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:09,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271107618] [2024-10-24 19:24:09,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271107618] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:09,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:09,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:24:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002235978] [2024-10-24 19:24:09,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:09,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:24:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:24:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:24:09,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:09,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:09,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:09,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:09,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:10,387 INFO L124 PetriNetUnfolderBase]: 242/458 cut-off events. [2024-10-24 19:24:10,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:24:10,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 458 events. 242/458 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2119 event pairs, 201 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 845. Up to 396 conditions per place. [2024-10-24 19:24:10,391 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-10-24 19:24:10,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 213 flow [2024-10-24 19:24:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:24:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:24:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-10-24 19:24:10,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3325 [2024-10-24 19:24:10,395 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 10 states and 133 transitions. [2024-10-24 19:24:10,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 213 flow [2024-10-24 19:24:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:24:10,397 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 174 flow [2024-10-24 19:24:10,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-24 19:24:10,398 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-24 19:24:10,398 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 174 flow [2024-10-24 19:24:10,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:10,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:10,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:24:10,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:24:10,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:10,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:10,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2137644518, now seen corresponding path program 1 times [2024-10-24 19:24:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:10,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621747519] [2024-10-24 19:24:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:10,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:10,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:24:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:10,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:24:10,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:10,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:10,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621747519] [2024-10-24 19:24:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621747519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39412199] [2024-10-24 19:24:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:10,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:24:10,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:24:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:24:10,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:24:10,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:10,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:10,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:24:10,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:10,906 INFO L124 PetriNetUnfolderBase]: 254/497 cut-off events. [2024-10-24 19:24:10,907 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 19:24:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 497 events. 254/497 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2312 event pairs, 214 based on Foata normal form. 17/387 useless extension candidates. Maximal degree in co-relation 959. Up to 400 conditions per place. [2024-10-24 19:24:10,910 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 36 selfloop transitions, 2 changer transitions 8/52 dead transitions. [2024-10-24 19:24:10,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 282 flow [2024-10-24 19:24:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:24:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:24:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-24 19:24:10,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-24 19:24:10,913 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 174 flow. Second operand 4 states and 86 transitions. [2024-10-24 19:24:10,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 282 flow [2024-10-24 19:24:10,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 252 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:10,916 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 162 flow [2024-10-24 19:24:10,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-24 19:24:10,917 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-10-24 19:24:10,917 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 162 flow [2024-10-24 19:24:10,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:10,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:10,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:10,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:24:11,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:11,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:11,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547268, now seen corresponding path program 1 times [2024-10-24 19:24:11,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:11,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039067956] [2024-10-24 19:24:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:11,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:11,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:24:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:11,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 19:24:11,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:11,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:11,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:11,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039067956] [2024-10-24 19:24:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039067956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:11,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:24:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388966925] [2024-10-24 19:24:11,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:11,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:24:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:24:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:24:12,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:12,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:12,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:12,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:12,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:13,477 INFO L124 PetriNetUnfolderBase]: 571/1087 cut-off events. [2024-10-24 19:24:13,478 INFO L125 PetriNetUnfolderBase]: For 108/120 co-relation queries the response was YES. [2024-10-24 19:24:13,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1087 events. 571/1087 cut-off events. For 108/120 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 473 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 2411. Up to 390 conditions per place. [2024-10-24 19:24:13,485 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 69 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-24 19:24:13,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 432 flow [2024-10-24 19:24:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:24:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:24:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-10-24 19:24:13,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-10-24 19:24:13,487 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 162 flow. Second operand 8 states and 156 transitions. [2024-10-24 19:24:13,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 432 flow [2024-10-24 19:24:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:13,491 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 193 flow [2024-10-24 19:24:13,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-10-24 19:24:13,493 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-10-24 19:24:13,494 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 193 flow [2024-10-24 19:24:13,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:13,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:13,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:13,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 19:24:13,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:13,697 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1360547267, now seen corresponding path program 1 times [2024-10-24 19:24:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777882993] [2024-10-24 19:24:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:13,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:13,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:13,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:13,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:24:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:13,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:24:13,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:13,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:24:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:13,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:13,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777882993] [2024-10-24 19:24:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777882993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682518451] [2024-10-24 19:24:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:13,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:24:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:24:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:24:13,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:13,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:13,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:13,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:13,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:13,982 INFO L124 PetriNetUnfolderBase]: 380/745 cut-off events. [2024-10-24 19:24:13,982 INFO L125 PetriNetUnfolderBase]: For 317/333 co-relation queries the response was YES. [2024-10-24 19:24:13,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 745 events. 380/745 cut-off events. For 317/333 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3536 event pairs, 302 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 1667. Up to 622 conditions per place. [2024-10-24 19:24:13,987 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 30 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-24 19:24:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 251 flow [2024-10-24 19:24:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:24:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:24:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-24 19:24:13,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-24 19:24:13,989 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 193 flow. Second operand 4 states and 63 transitions. [2024-10-24 19:24:13,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 251 flow [2024-10-24 19:24:13,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:13,991 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 183 flow [2024-10-24 19:24:13,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-10-24 19:24:13,992 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-10-24 19:24:13,993 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 183 flow [2024-10-24 19:24:13,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:13,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:13,993 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:24:13,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 19:24:14,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:14,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:14,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 718959979, now seen corresponding path program 2 times [2024-10-24 19:24:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135593905] [2024-10-24 19:24:14,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:14,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:14,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:24:14,264 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:14,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:14,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:24:14,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:14,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:14,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:15,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135593905] [2024-10-24 19:24:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135593905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:15,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:15,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:24:15,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260917297] [2024-10-24 19:24:15,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:15,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:24:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:15,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:24:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:24:15,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:15,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 183 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:15,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:15,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:15,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:17,513 INFO L124 PetriNetUnfolderBase]: 386/763 cut-off events. [2024-10-24 19:24:17,513 INFO L125 PetriNetUnfolderBase]: For 356/372 co-relation queries the response was YES. [2024-10-24 19:24:17,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 763 events. 386/763 cut-off events. For 356/372 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3643 event pairs, 302 based on Foata normal form. 6/719 useless extension candidates. Maximal degree in co-relation 1670. Up to 633 conditions per place. [2024-10-24 19:24:17,518 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 30 changer transitions 0/59 dead transitions. [2024-10-24 19:24:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 411 flow [2024-10-24 19:24:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:24:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:24:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 258 transitions. [2024-10-24 19:24:17,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29318181818181815 [2024-10-24 19:24:17,523 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 183 flow. Second operand 22 states and 258 transitions. [2024-10-24 19:24:17,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 411 flow [2024-10-24 19:24:17,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:17,530 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 381 flow [2024-10-24 19:24:17,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-10-24 19:24:17,531 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-24 19:24:17,531 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 381 flow [2024-10-24 19:24:17,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:17,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:17,533 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:17,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:17,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:17,737 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:17,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash -462962238, now seen corresponding path program 2 times [2024-10-24 19:24:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:17,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364905855] [2024-10-24 19:24:17,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:17,741 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:17,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:24:17,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:24:17,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:17,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:24:17,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:17,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:24:17,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:17,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364905855] [2024-10-24 19:24:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364905855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218056093] [2024-10-24 19:24:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:17,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:24:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:24:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:24:17,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:24:17,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:24:17,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:18,114 INFO L124 PetriNetUnfolderBase]: 329/661 cut-off events. [2024-10-24 19:24:18,115 INFO L125 PetriNetUnfolderBase]: For 342/358 co-relation queries the response was YES. [2024-10-24 19:24:18,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 661 events. 329/661 cut-off events. For 342/358 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3055 event pairs, 249 based on Foata normal form. 34/650 useless extension candidates. Maximal degree in co-relation 1431. Up to 532 conditions per place. [2024-10-24 19:24:18,120 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 39 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-10-24 19:24:18,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 457 flow [2024-10-24 19:24:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:24:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:24:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-24 19:24:18,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-24 19:24:18,122 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 381 flow. Second operand 4 states and 64 transitions. [2024-10-24 19:24:18,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 457 flow [2024-10-24 19:24:18,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 376 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-24 19:24:18,125 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 298 flow [2024-10-24 19:24:18,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-24 19:24:18,126 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-24 19:24:18,128 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 298 flow [2024-10-24 19:24:18,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:18,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:18,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:18,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:24:18,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:18,332 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:18,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2048442773, now seen corresponding path program 1 times [2024-10-24 19:24:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145956422] [2024-10-24 19:24:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:18,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:18,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:18,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:24:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:18,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 19:24:18,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:18,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:18,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145956422] [2024-10-24 19:24:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145956422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710964510] [2024-10-24 19:24:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:18,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:24:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:24:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:24:18,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:24:18,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:18,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:18,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:24:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:18,579 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-10-24 19:24:18,579 INFO L125 PetriNetUnfolderBase]: For 168/180 co-relation queries the response was YES. [2024-10-24 19:24:18,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1590 conditions, 712 events. 353/712 cut-off events. For 168/180 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3201 event pairs, 102 based on Foata normal form. 18/694 useless extension candidates. Maximal degree in co-relation 1547. Up to 475 conditions per place. [2024-10-24 19:24:18,584 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 54 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-10-24 19:24:18,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 431 flow [2024-10-24 19:24:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:24:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:24:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-24 19:24:18,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-24 19:24:18,586 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 298 flow. Second operand 3 states and 59 transitions. [2024-10-24 19:24:18,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 431 flow [2024-10-24 19:24:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:18,589 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 309 flow [2024-10-24 19:24:18,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-24 19:24:18,590 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-10-24 19:24:18,590 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 309 flow [2024-10-24 19:24:18,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:18,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:18,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:18,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:24:18,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:18,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:18,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1448876003, now seen corresponding path program 2 times [2024-10-24 19:24:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223900757] [2024-10-24 19:24:18,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:18,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:18,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:18,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:24:18,871 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:24:18,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:18,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:18,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:19,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:19,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:19,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223900757] [2024-10-24 19:24:19,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223900757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:19,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:19,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:19,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887045194] [2024-10-24 19:24:19,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:19,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:19,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:19,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:19,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 309 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:19,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:19,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:19,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:19,863 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-10-24 19:24:19,864 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-10-24 19:24:19,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 922 events. 464/922 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4436 event pairs, 87 based on Foata normal form. 3/883 useless extension candidates. Maximal degree in co-relation 2285. Up to 610 conditions per place. [2024-10-24 19:24:19,870 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 23 changer transitions 3/91 dead transitions. [2024-10-24 19:24:19,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 573 flow [2024-10-24 19:24:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-24 19:24:19,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-24 19:24:19,872 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 309 flow. Second operand 11 states and 147 transitions. [2024-10-24 19:24:19,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 573 flow [2024-10-24 19:24:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 551 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:19,876 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 395 flow [2024-10-24 19:24:19,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-10-24 19:24:19,877 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-24 19:24:19,877 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 395 flow [2024-10-24 19:24:19,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:19,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:19,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:19,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:20,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:20,081 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:20,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash 679100977, now seen corresponding path program 3 times [2024-10-24 19:24:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:20,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531161524] [2024-10-24 19:24:20,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:24:20,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:20,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:20,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:24:20,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 19:24:20,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:20,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:20,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:20,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:20,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531161524] [2024-10-24 19:24:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531161524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661199861] [2024-10-24 19:24:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:20,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:20,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:20,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 395 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:20,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:20,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:20,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:21,172 INFO L124 PetriNetUnfolderBase]: 536/1105 cut-off events. [2024-10-24 19:24:21,172 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2024-10-24 19:24:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 1105 events. 536/1105 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5771 event pairs, 129 based on Foata normal form. 3/1054 useless extension candidates. Maximal degree in co-relation 3057. Up to 760 conditions per place. [2024-10-24 19:24:21,180 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 28 changer transitions 3/99 dead transitions. [2024-10-24 19:24:21,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 713 flow [2024-10-24 19:24:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-24 19:24:21,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3340909090909091 [2024-10-24 19:24:21,182 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 395 flow. Second operand 11 states and 147 transitions. [2024-10-24 19:24:21,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 713 flow [2024-10-24 19:24:21,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 678 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:21,188 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 539 flow [2024-10-24 19:24:21,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-10-24 19:24:21,189 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-10-24 19:24:21,189 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 539 flow [2024-10-24 19:24:21,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:21,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:21,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:21,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:21,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:21,391 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:21,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1331573087, now seen corresponding path program 4 times [2024-10-24 19:24:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:21,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35520954] [2024-10-24 19:24:21,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:24:21,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:21,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:21,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:21,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:24:21,483 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:24:21,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:21,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:24:21,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:21,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:21,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35520954] [2024-10-24 19:24:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35520954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 19:24:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376182295] [2024-10-24 19:24:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:21,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:24:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:24:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:24:21,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:21,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 539 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:21,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:21,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:21,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:22,231 INFO L124 PetriNetUnfolderBase]: 647/1396 cut-off events. [2024-10-24 19:24:22,231 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-10-24 19:24:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 1396 events. 647/1396 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8346 event pairs, 45 based on Foata normal form. 3/1399 useless extension candidates. Maximal degree in co-relation 4461. Up to 688 conditions per place. [2024-10-24 19:24:22,242 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 78 selfloop transitions, 35 changer transitions 5/123 dead transitions. [2024-10-24 19:24:22,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 984 flow [2024-10-24 19:24:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-10-24 19:24:22,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-10-24 19:24:22,244 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 539 flow. Second operand 11 states and 167 transitions. [2024-10-24 19:24:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 984 flow [2024-10-24 19:24:22,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 951 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-24 19:24:22,253 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 707 flow [2024-10-24 19:24:22,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=707, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-10-24 19:24:22,254 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-10-24 19:24:22,254 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 707 flow [2024-10-24 19:24:22,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:22,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:22,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:22,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:24:22,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:22,456 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:22,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash 801342129, now seen corresponding path program 5 times [2024-10-24 19:24:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787335232] [2024-10-24 19:24:22,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:24:22,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:22,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:22,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:24:22,518 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:22,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:22,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:22,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:22,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:22,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:22,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787335232] [2024-10-24 19:24:22,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787335232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:22,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:22,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108934237] [2024-10-24 19:24:22,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:22,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:22,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:22,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:22,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:22,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:22,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 707 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:22,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:22,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:22,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:27,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:24:27,457 INFO L124 PetriNetUnfolderBase]: 725/1519 cut-off events. [2024-10-24 19:24:27,457 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-10-24 19:24:27,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1519 events. 725/1519 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9025 event pairs, 141 based on Foata normal form. 3/1522 useless extension candidates. Maximal degree in co-relation 5689. Up to 1033 conditions per place. [2024-10-24 19:24:27,470 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 80 selfloop transitions, 39 changer transitions 5/128 dead transitions. [2024-10-24 19:24:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 128 transitions, 1122 flow [2024-10-24 19:24:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:24:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:24:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-10-24 19:24:27,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-10-24 19:24:27,472 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 707 flow. Second operand 12 states and 164 transitions. [2024-10-24 19:24:27,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 128 transitions, 1122 flow [2024-10-24 19:24:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1072 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:27,486 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 838 flow [2024-10-24 19:24:27,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=838, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-10-24 19:24:27,487 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-10-24 19:24:27,487 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 838 flow [2024-10-24 19:24:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:27,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:27,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:27,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:24:27,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:27,689 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:27,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1282154521, now seen corresponding path program 6 times [2024-10-24 19:24:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995211656] [2024-10-24 19:24:27,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:24:27,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:27,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:27,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:24:27,763 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-24 19:24:27,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:27,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:27,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:28,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:28,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995211656] [2024-10-24 19:24:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995211656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:28,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941483659] [2024-10-24 19:24:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:28,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:28,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:28,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:28,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:28,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:28,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:28,659 INFO L124 PetriNetUnfolderBase]: 761/1621 cut-off events. [2024-10-24 19:24:28,659 INFO L125 PetriNetUnfolderBase]: For 6082/6082 co-relation queries the response was YES. [2024-10-24 19:24:28,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6525 conditions, 1621 events. 761/1621 cut-off events. For 6082/6082 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9980 event pairs, 198 based on Foata normal form. 3/1624 useless extension candidates. Maximal degree in co-relation 6460. Up to 1228 conditions per place. [2024-10-24 19:24:28,673 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 88 selfloop transitions, 31 changer transitions 3/126 dead transitions. [2024-10-24 19:24:28,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 1216 flow [2024-10-24 19:24:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-10-24 19:24:28,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33181818181818185 [2024-10-24 19:24:28,675 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 838 flow. Second operand 11 states and 146 transitions. [2024-10-24 19:24:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 1216 flow [2024-10-24 19:24:28,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1116 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:28,691 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 901 flow [2024-10-24 19:24:28,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=901, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2024-10-24 19:24:28,692 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2024-10-24 19:24:28,692 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 901 flow [2024-10-24 19:24:28,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:28,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:28,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:28,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-24 19:24:28,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:28,893 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:28,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1351660687, now seen corresponding path program 7 times [2024-10-24 19:24:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575815843] [2024-10-24 19:24:28,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:24:28,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:28,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:28,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:24:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:28,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:28,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:29,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:29,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:29,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575815843] [2024-10-24 19:24:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575815843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:29,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:29,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:29,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229030550] [2024-10-24 19:24:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:29,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:29,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:29,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 901 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:29,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:29,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:29,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:29,796 INFO L124 PetriNetUnfolderBase]: 836/1780 cut-off events. [2024-10-24 19:24:29,796 INFO L125 PetriNetUnfolderBase]: For 7612/7612 co-relation queries the response was YES. [2024-10-24 19:24:29,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1780 events. 836/1780 cut-off events. For 7612/7612 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11161 event pairs, 207 based on Foata normal form. 3/1783 useless extension candidates. Maximal degree in co-relation 7204. Up to 1342 conditions per place. [2024-10-24 19:24:29,810 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 91 selfloop transitions, 31 changer transitions 5/131 dead transitions. [2024-10-24 19:24:29,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 1277 flow [2024-10-24 19:24:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-10-24 19:24:29,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386363636363636 [2024-10-24 19:24:29,812 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 901 flow. Second operand 11 states and 149 transitions. [2024-10-24 19:24:29,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 1277 flow [2024-10-24 19:24:29,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 131 transitions, 1193 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:29,833 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 932 flow [2024-10-24 19:24:29,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=932, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2024-10-24 19:24:29,834 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-10-24 19:24:29,834 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 932 flow [2024-10-24 19:24:29,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:29,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:29,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:29,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:30,035 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:30,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2112975087, now seen corresponding path program 8 times [2024-10-24 19:24:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504520714] [2024-10-24 19:24:30,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:30,037 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:30,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-24 19:24:30,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:24:30,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:30,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:30,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:30,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:30,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:30,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504520714] [2024-10-24 19:24:30,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504520714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:30,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:30,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:30,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498421366] [2024-10-24 19:24:30,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:30,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:30,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:30,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:30,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 932 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:30,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:30,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:31,094 INFO L124 PetriNetUnfolderBase]: 872/1882 cut-off events. [2024-10-24 19:24:31,095 INFO L125 PetriNetUnfolderBase]: For 6706/6706 co-relation queries the response was YES. [2024-10-24 19:24:31,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7490 conditions, 1882 events. 872/1882 cut-off events. For 6706/6706 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12098 event pairs, 252 based on Foata normal form. 3/1885 useless extension candidates. Maximal degree in co-relation 7418. Up to 1489 conditions per place. [2024-10-24 19:24:31,108 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 93 selfloop transitions, 30 changer transitions 3/130 dead transitions. [2024-10-24 19:24:31,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 130 transitions, 1266 flow [2024-10-24 19:24:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-10-24 19:24:31,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-10-24 19:24:31,110 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 932 flow. Second operand 11 states and 145 transitions. [2024-10-24 19:24:31,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 130 transitions, 1266 flow [2024-10-24 19:24:31,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1193 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:31,131 INFO L231 Difference]: Finished difference. Result has 142 places, 111 transitions, 952 flow [2024-10-24 19:24:31,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=952, PETRI_PLACES=142, PETRI_TRANSITIONS=111} [2024-10-24 19:24:31,132 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-10-24 19:24:31,132 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 111 transitions, 952 flow [2024-10-24 19:24:31,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:31,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:31,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:31,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-24 19:24:31,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:31,334 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:31,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash 609594811, now seen corresponding path program 9 times [2024-10-24 19:24:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:31,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446272290] [2024-10-24 19:24:31,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:24:31,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:31,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:31,336 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:31,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-24 19:24:31,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 19:24:31,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:31,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:31,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:31,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:31,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446272290] [2024-10-24 19:24:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446272290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:31,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 19:24:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421503886] [2024-10-24 19:24:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:31,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:24:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:24:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:24:31,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:31,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 111 transitions, 952 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:31,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:31,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:31,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:32,159 INFO L124 PetriNetUnfolderBase]: 947/2035 cut-off events. [2024-10-24 19:24:32,159 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-10-24 19:24:32,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2035 events. 947/2035 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13309 event pairs, 276 based on Foata normal form. 3/2035 useless extension candidates. Maximal degree in co-relation 8051. Up to 1588 conditions per place. [2024-10-24 19:24:32,171 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 95 selfloop transitions, 30 changer transitions 5/134 dead transitions. [2024-10-24 19:24:32,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 1331 flow [2024-10-24 19:24:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:24:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:24:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-10-24 19:24:32,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-10-24 19:24:32,173 INFO L175 Difference]: Start difference. First operand has 142 places, 111 transitions, 952 flow. Second operand 11 states and 150 transitions. [2024-10-24 19:24:32,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 1331 flow [2024-10-24 19:24:32,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 134 transitions, 1259 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-10-24 19:24:32,201 INFO L231 Difference]: Finished difference. Result has 146 places, 114 transitions, 995 flow [2024-10-24 19:24:32,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=995, PETRI_PLACES=146, PETRI_TRANSITIONS=114} [2024-10-24 19:24:32,202 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-10-24 19:24:32,202 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 114 transitions, 995 flow [2024-10-24 19:24:32,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:32,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:32,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:32,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-24 19:24:32,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:32,404 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:32,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1021910651, now seen corresponding path program 10 times [2024-10-24 19:24:32,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107616009] [2024-10-24 19:24:32,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:24:32,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:32,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:32,407 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:32,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-24 19:24:32,479 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:24:32,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:32,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:24:32,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:32,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:32,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107616009] [2024-10-24 19:24:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107616009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:32,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 19:24:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816166407] [2024-10-24 19:24:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:32,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:24:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:24:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:24:32,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:32,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 114 transitions, 995 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:32,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:32,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:32,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:33,196 INFO L124 PetriNetUnfolderBase]: 908/2035 cut-off events. [2024-10-24 19:24:33,196 INFO L125 PetriNetUnfolderBase]: For 8443/8443 co-relation queries the response was YES. [2024-10-24 19:24:33,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8179 conditions, 2035 events. 908/2035 cut-off events. For 8443/8443 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13857 event pairs, 282 based on Foata normal form. 3/2017 useless extension candidates. Maximal degree in co-relation 8102. Up to 1339 conditions per place. [2024-10-24 19:24:33,209 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 87 selfloop transitions, 39 changer transitions 5/136 dead transitions. [2024-10-24 19:24:33,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 1371 flow [2024-10-24 19:24:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:24:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:24:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-10-24 19:24:33,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-10-24 19:24:33,211 INFO L175 Difference]: Start difference. First operand has 146 places, 114 transitions, 995 flow. Second operand 10 states and 154 transitions. [2024-10-24 19:24:33,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 1371 flow [2024-10-24 19:24:33,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1280 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-10-24 19:24:33,228 INFO L231 Difference]: Finished difference. Result has 151 places, 119 transitions, 1055 flow [2024-10-24 19:24:33,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=151, PETRI_TRANSITIONS=119} [2024-10-24 19:24:33,228 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-10-24 19:24:33,229 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 119 transitions, 1055 flow [2024-10-24 19:24:33,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:33,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:33,229 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-24 19:24:33,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-24 19:24:33,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:33,430 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:33,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash -366624145, now seen corresponding path program 3 times [2024-10-24 19:24:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495788695] [2024-10-24 19:24:33,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:24:33,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:33,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:33,432 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:33,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-24 19:24:33,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 19:24:33,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:33,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:24:33,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:33,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:34,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:35,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495788695] [2024-10-24 19:24:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495788695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:35,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:35,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-24 19:24:35,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113565676] [2024-10-24 19:24:35,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:35,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 19:24:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 19:24:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-24 19:24:36,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:36,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 119 transitions, 1055 flow. Second operand has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:36,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:48,369 INFO L124 PetriNetUnfolderBase]: 791/1873 cut-off events. [2024-10-24 19:24:48,369 INFO L125 PetriNetUnfolderBase]: For 9387/9405 co-relation queries the response was YES. [2024-10-24 19:24:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 1873 events. 791/1873 cut-off events. For 9387/9405 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12800 event pairs, 525 based on Foata normal form. 12/1864 useless extension candidates. Maximal degree in co-relation 7917. Up to 1497 conditions per place. [2024-10-24 19:24:48,380 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 84 selfloop transitions, 66 changer transitions 0/155 dead transitions. [2024-10-24 19:24:48,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 155 transitions, 1667 flow [2024-10-24 19:24:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 19:24:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-24 19:24:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 513 transitions. [2024-10-24 19:24:48,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27880434782608693 [2024-10-24 19:24:48,383 INFO L175 Difference]: Start difference. First operand has 151 places, 119 transitions, 1055 flow. Second operand 46 states and 513 transitions. [2024-10-24 19:24:48,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 155 transitions, 1667 flow [2024-10-24 19:24:48,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 155 transitions, 1582 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-24 19:24:48,404 INFO L231 Difference]: Finished difference. Result has 199 places, 155 transitions, 1468 flow [2024-10-24 19:24:48,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1468, PETRI_PLACES=199, PETRI_TRANSITIONS=155} [2024-10-24 19:24:48,405 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-10-24 19:24:48,405 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 155 transitions, 1468 flow [2024-10-24 19:24:48,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:48,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:48,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:48,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:48,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:48,606 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:48,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash -622766776, now seen corresponding path program 1 times [2024-10-24 19:24:48,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742647593] [2024-10-24 19:24:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:48,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:48,609 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:48,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-24 19:24:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:48,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:24:48,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:48,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:48,874 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-24 19:24:48,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 28 [2024-10-24 19:24:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:48,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742647593] [2024-10-24 19:24:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742647593] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:48,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:48,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-24 19:24:48,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64788561] [2024-10-24 19:24:48,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:48,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:24:48,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:48,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:24:48,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:24:48,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:48,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 155 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:48,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:48,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:48,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:49,392 INFO L124 PetriNetUnfolderBase]: 1169/2530 cut-off events. [2024-10-24 19:24:49,392 INFO L125 PetriNetUnfolderBase]: For 12109/12109 co-relation queries the response was YES. [2024-10-24 19:24:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 2530 events. 1169/2530 cut-off events. For 12109/12109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16837 event pairs, 213 based on Foata normal form. 33/2560 useless extension candidates. Maximal degree in co-relation 10200. Up to 1297 conditions per place. [2024-10-24 19:24:49,411 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 173 selfloop transitions, 14 changer transitions 0/191 dead transitions. [2024-10-24 19:24:49,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 2063 flow [2024-10-24 19:24:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:24:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:24:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-24 19:24:49,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-24 19:24:49,413 INFO L175 Difference]: Start difference. First operand has 199 places, 155 transitions, 1468 flow. Second operand 6 states and 108 transitions. [2024-10-24 19:24:49,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 2063 flow [2024-10-24 19:24:49,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 1901 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-24 19:24:49,451 INFO L231 Difference]: Finished difference. Result has 185 places, 159 transitions, 1408 flow [2024-10-24 19:24:49,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=185, PETRI_TRANSITIONS=159} [2024-10-24 19:24:49,451 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-10-24 19:24:49,452 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 159 transitions, 1408 flow [2024-10-24 19:24:49,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:49,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:49,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:49,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-10-24 19:24:49,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:49,653 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:49,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1701060505, now seen corresponding path program 1 times [2024-10-24 19:24:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572216635] [2024-10-24 19:24:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:49,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:49,655 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:49,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-24 19:24:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:49,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:24:49,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:24:49,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:49,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572216635] [2024-10-24 19:24:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572216635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:24:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973852064] [2024-10-24 19:24:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:49,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:24:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:24:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:24:49,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:24:49,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 159 transitions, 1408 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:49,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:49,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:24:49,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:50,168 INFO L124 PetriNetUnfolderBase]: 920/1999 cut-off events. [2024-10-24 19:24:50,168 INFO L125 PetriNetUnfolderBase]: For 12190/12190 co-relation queries the response was YES. [2024-10-24 19:24:50,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8897 conditions, 1999 events. 920/1999 cut-off events. For 12190/12190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12192 event pairs, 264 based on Foata normal form. 99/2095 useless extension candidates. Maximal degree in co-relation 8795. Up to 820 conditions per place. [2024-10-24 19:24:50,183 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 108 selfloop transitions, 5 changer transitions 45/162 dead transitions. [2024-10-24 19:24:50,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 162 transitions, 1717 flow [2024-10-24 19:24:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:24:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:24:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-24 19:24:50,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-10-24 19:24:50,185 INFO L175 Difference]: Start difference. First operand has 185 places, 159 transitions, 1408 flow. Second operand 5 states and 87 transitions. [2024-10-24 19:24:50,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 162 transitions, 1717 flow [2024-10-24 19:24:50,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 162 transitions, 1639 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:50,223 INFO L231 Difference]: Finished difference. Result has 186 places, 107 transitions, 895 flow [2024-10-24 19:24:50,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=186, PETRI_TRANSITIONS=107} [2024-10-24 19:24:50,224 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2024-10-24 19:24:50,224 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 107 transitions, 895 flow [2024-10-24 19:24:50,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:50,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:50,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:50,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-24 19:24:50,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:50,425 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:50,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -242015340, now seen corresponding path program 1 times [2024-10-24 19:24:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696747030] [2024-10-24 19:24:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:50,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:50,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:50,429 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:50,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-10-24 19:24:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:50,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 19:24:50,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:50,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:24:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:50,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:51,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696747030] [2024-10-24 19:24:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696747030] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:51,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-24 19:24:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377779408] [2024-10-24 19:24:51,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:51,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:24:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:24:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:24:51,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-24 19:24:51,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 107 transitions, 895 flow. Second operand has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:51,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:51,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-24 19:24:51,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:51,664 INFO L124 PetriNetUnfolderBase]: 399/939 cut-off events. [2024-10-24 19:24:51,664 INFO L125 PetriNetUnfolderBase]: For 3287/3287 co-relation queries the response was YES. [2024-10-24 19:24:51,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 939 events. 399/939 cut-off events. For 3287/3287 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4660 event pairs, 226 based on Foata normal form. 32/964 useless extension candidates. Maximal degree in co-relation 3709. Up to 580 conditions per place. [2024-10-24 19:24:51,671 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 54 selfloop transitions, 46 changer transitions 29/135 dead transitions. [2024-10-24 19:24:51,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 135 transitions, 1372 flow [2024-10-24 19:24:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:24:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:24:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-10-24 19:24:51,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-10-24 19:24:51,673 INFO L175 Difference]: Start difference. First operand has 186 places, 107 transitions, 895 flow. Second operand 8 states and 117 transitions. [2024-10-24 19:24:51,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 135 transitions, 1372 flow [2024-10-24 19:24:51,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1222 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-10-24 19:24:51,691 INFO L231 Difference]: Finished difference. Result has 140 places, 106 transitions, 884 flow [2024-10-24 19:24:51,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=884, PETRI_PLACES=140, PETRI_TRANSITIONS=106} [2024-10-24 19:24:51,692 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-10-24 19:24:51,692 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 106 transitions, 884 flow [2024-10-24 19:24:51,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.833333333333334) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:51,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:51,692 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:51,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-10-24 19:24:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:51,893 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1891889626, now seen corresponding path program 2 times [2024-10-24 19:24:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647521468] [2024-10-24 19:24:51,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:51,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:51,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:51,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-24 19:24:51,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:51,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:51,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 19:24:52,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:52,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:53,407 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:24:53,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 72 [2024-10-24 19:24:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:54,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:54,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647521468] [2024-10-24 19:24:54,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647521468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:54,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-24 19:24:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017369779] [2024-10-24 19:24:54,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:54,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 19:24:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 19:24:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2024-10-24 19:24:54,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:24:54,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 106 transitions, 884 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:54,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:54,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:24:54,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:56,599 INFO L124 PetriNetUnfolderBase]: 930/1797 cut-off events. [2024-10-24 19:24:56,600 INFO L125 PetriNetUnfolderBase]: For 2310/2310 co-relation queries the response was YES. [2024-10-24 19:24:56,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 1797 events. 930/1797 cut-off events. For 2310/2310 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9488 event pairs, 18 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 5667. Up to 775 conditions per place. [2024-10-24 19:24:56,609 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 131 selfloop transitions, 78 changer transitions 9/221 dead transitions. [2024-10-24 19:24:56,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 1787 flow [2024-10-24 19:24:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 19:24:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-24 19:24:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 300 transitions. [2024-10-24 19:24:56,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32608695652173914 [2024-10-24 19:24:56,611 INFO L175 Difference]: Start difference. First operand has 140 places, 106 transitions, 884 flow. Second operand 23 states and 300 transitions. [2024-10-24 19:24:56,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 1787 flow [2024-10-24 19:24:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 1701 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-10-24 19:24:56,627 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 1327 flow [2024-10-24 19:24:56,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1327, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2024-10-24 19:24:56,628 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-10-24 19:24:56,629 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 1327 flow [2024-10-24 19:24:56,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:56,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:56,630 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:56,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-10-24 19:24:56,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:56,830 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:24:56,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash 198941118, now seen corresponding path program 3 times [2024-10-24 19:24:56,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:56,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624559131] [2024-10-24 19:24:56,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:24:56,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:24:56,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:56,832 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:24:56,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-10-24 19:24:56,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:24:56,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:56,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 19:24:56,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:57,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:58,495 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:24:58,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 72 [2024-10-24 19:24:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:24:58,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624559131] [2024-10-24 19:24:58,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624559131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:58,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:58,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-24 19:24:58,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100701330] [2024-10-24 19:24:58,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:58,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 19:24:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 19:24:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-10-24 19:24:58,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:24:58,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 1327 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:58,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:58,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:24:58,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:01,311 INFO L124 PetriNetUnfolderBase]: 996/1951 cut-off events. [2024-10-24 19:25:01,311 INFO L125 PetriNetUnfolderBase]: For 4948/4948 co-relation queries the response was YES. [2024-10-24 19:25:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 1951 events. 996/1951 cut-off events. For 4948/4948 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10849 event pairs, 32 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 7527. Up to 945 conditions per place. [2024-10-24 19:25:01,323 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 135 selfloop transitions, 93 changer transitions 5/236 dead transitions. [2024-10-24 19:25:01,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 236 transitions, 2166 flow [2024-10-24 19:25:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 19:25:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-24 19:25:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 294 transitions. [2024-10-24 19:25:01,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31956521739130433 [2024-10-24 19:25:01,325 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 1327 flow. Second operand 23 states and 294 transitions. [2024-10-24 19:25:01,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 236 transitions, 2166 flow [2024-10-24 19:25:01,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 236 transitions, 2031 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-24 19:25:01,348 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 1655 flow [2024-10-24 19:25:01,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1655, PETRI_PLACES=183, PETRI_TRANSITIONS=177} [2024-10-24 19:25:01,349 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-10-24 19:25:01,349 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 1655 flow [2024-10-24 19:25:01,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:01,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:01,350 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:01,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-10-24 19:25:01,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:01,550 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:01,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1669479410, now seen corresponding path program 4 times [2024-10-24 19:25:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953982262] [2024-10-24 19:25:01,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:25:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:01,552 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:01,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-10-24 19:25:01,671 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:25:01,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:01,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 19:25:01,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:25:02,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:03,203 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:25:03,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 72 [2024-10-24 19:25:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:25:03,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953982262] [2024-10-24 19:25:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953982262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:03,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:03,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2024-10-24 19:25:03,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846443034] [2024-10-24 19:25:03,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:03,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 19:25:03,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 19:25:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-10-24 19:25:03,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:25:03,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 1655 flow. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:03,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:03,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:25:03,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:06,326 INFO L124 PetriNetUnfolderBase]: 1036/2069 cut-off events. [2024-10-24 19:25:06,326 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-10-24 19:25:06,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8708 conditions, 2069 events. 1036/2069 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11978 event pairs, 40 based on Foata normal form. 2/2071 useless extension candidates. Maximal degree in co-relation 8654. Up to 939 conditions per place. [2024-10-24 19:25:06,337 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 132 selfloop transitions, 102 changer transitions 5/242 dead transitions. [2024-10-24 19:25:06,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 242 transitions, 2413 flow [2024-10-24 19:25:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 19:25:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 19:25:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 260 transitions. [2024-10-24 19:25:06,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-10-24 19:25:06,339 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 1655 flow. Second operand 20 states and 260 transitions. [2024-10-24 19:25:06,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 242 transitions, 2413 flow [2024-10-24 19:25:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 242 transitions, 2234 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-10-24 19:25:06,370 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 1851 flow [2024-10-24 19:25:06,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1851, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2024-10-24 19:25:06,371 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 152 predicate places. [2024-10-24 19:25:06,371 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 1851 flow [2024-10-24 19:25:06,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:06,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:06,371 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:06,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:06,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:06,572 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:06,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1564052236, now seen corresponding path program 5 times [2024-10-24 19:25:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966070803] [2024-10-24 19:25:06,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:25:06,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:06,574 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:06,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-10-24 19:25:06,736 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:25:06,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:06,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 19:25:06,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:06,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-10-24 19:25:06,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:25:06,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 21 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-10-24 19:25:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:09,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:16,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 644 treesize of output 628